WordPress showing unpublished posts

Basically I created a custom page template using this wp query code

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<?php get_template_part( 'content', 'page' ); ?>
	<?php endwhile; else: endif; ?>

	<?php global $wp_query;

	$wp_query = new WP_Query('category_name='.get_the_title().'&post_status=publish,future'.'&showposts=8'.'&paged='.$paged);?>
	<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

/***************I cut out the unrelated codes****************/

	<?php endwhile; else: endif; ?>

The problem is when I schedule a post for a future date, it displays it in the page using this custom page template.

Does anyone know the conditional tag for scheduled posts so I could exclude it?